I agree to a point. But for me a winger should be more about providing than scoring goals. Imo i look at all Nani's best attributes, his close control, ability to beat a man, his shooting, his unpredictability. They for me are all better suited to a wide forward role, where he can still provide, but he is better able to make the most of his significant goal threat. I just don't see him as a touchline winger in the system we play.
I would agree with the Giggs comparison also to an extent. For me both players often struggled with final ball delivery from the touchline, they are both better suited to commiting players and then driving into areas where they can cause panic.
Nani for me has got better in the past 2 seasons, but as i have said before when we played with 2 midfielders who carry the ball deep into our opponents half before giving Nani the ball. He is able to play from the edge of the box, rather than the touchline, and that gives him considerably more options he simply doesn't have when out wide.
If we look at his stats from those few games, where he played more around the edge of the box, i doubt he has ever had such a productive spell in such a short period of time.